flask-sqlalchemy | Adds SQLAlchemy support to Flask | SQL Database library
kandi X-RAY | flask-sqlalchemy Summary
kandi X-RAY | flask-sqlalchemy Summary
Adds SQLAlchemy support to Flask
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Retrieves pagination items from the given request .
- Configures the driver pool to use .
- Creates a new app .
- Iterate over pages .
- Constructs a table from its arguments .
- Returns true if table names should be set .
- Gets debug queries .
- Registers a user .
- Handles the login request .
- Handles a post .
flask-sqlalchemy Key Features
flask-sqlalchemy Examples and Code Snippets
Lines of Code : 0
License : No License
Copyquickstart
config
models
queries
pagination
contexts
binds
record-queries
track-modifications
customizing license
changes FROM python:3.8
WORKDIR /usr/src/app
COPY requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
CMD [ "python", "./app.py" ]
version: '3'
services:
helloworld:
build: ./
porq = session.query(User, func.coalesce(func.sum(Task.value), 0)).outerjoin(User.stripes).outerjoin(Stripe.related_task).group_by(User.id)
for user, value_total in q.all():
print(user, value)
tasks = [stripe.rela# User's table row is locked until session is commited or rolled back.
user = session.query(User).filter(User.id == current_user_id).with_for_update().first()
# Or session.query(User).get(current_user_id, with_for_update=True)
# Manipulatreplies = Reply.query.all()
with Session(engine) as session:
latest_subq = session.query(
Sample.id.label("sample_id"),
func.max(Process.date).label("latest_process")
).outerjoin(
Prosampair, Sample.id == Prosampair.sample_id
).outSELECT depname, empno, salary,
rank() OVER (PARTITION BY depname ORDER BY salary DESC)
FROM empsalary;
depname | empno | salary | rank
-----------+-------+--------+------
develop | 8 | 6000 | 1
deve...
# Passed variables to DB
new_professor = Professors(
name=name,
hindex=hindex_int)
db.session.add(new_professor)
db.session.commit()
return redirect("/registrants")
professorA = Professors(
name=naCommunity Discussions
Trending Discussions on flask-sqlalchemy
QUESTION
I am trying to get a Flask and Docker application to work but when I try and run it using my docker-compose up command in my Visual Studio terminal, it gives me an ImportError called ImportError: cannot import name 'json' from itsdangerous. I have tried to look for possible solutions to this problem but as of right now there are not many on here or anywhere else. The only two solutions I could find are to change the current installation of MarkupSafe and itsdangerous to a higher version: https://serverfault.com/questions/1094062/from-itsdangerous-import-json-as-json-importerror-cannot-import-name-json-fr and another one on GitHub that tells me to essentially change the MarkUpSafe and itsdangerous installation again https://github.com/aws/aws-sam-cli/issues/3661, I have also tried to make a virtual environment named veganetworkscriptenv to install the packages but that has also failed as well. I am currently using Flask 2.0.0 and Docker 5.0.0 and the error occurs on line eight in vegamain.py.
Here is the full ImportError that I get when I try and run the program:
...ANSWER
Answered 2022-Feb-20 at 12:31I was facing the same issue while running docker containers with flask.
I downgraded Flask to 1.1.4 and markupsafe to 2.0.1 which solved my issue.
Check this for reference.
QUESTION
I'm sure there is an easy solution to this problem but I haven't been able to find it or think it. I have a model "Entry" which are supposed to be in sequence with each other (For instance entry 1 might be the first part of a blog post, entry 2 the second part and so on)
...ANSWER
Answered 2022-Mar-31 at 07:29The "no attribute id" error occurs because SQLAlchemy interprets 'entry.id' as referring to the underlying Table object, rather than the model. Fix this by using either 'Entry.id' (model reference) or 'entry.c.id' (table reference).
Additionally, use back_populates rather than backref to configure the reverse relationships:
QUESTION
I am trying to run some pytests on vscode in a conda environment. The connection to my postgres db is handled by flask/flask-sqlalchemy and I have installed the add-ons for pytest (pytest-flask, pytest-postgresql), to use some fixtures.
When I'm now trying to run a test (or all of them), I get the following error message:
...ANSWER
Answered 2022-Mar-25 at 07:06Could you add this to your settings.json file?
"terminal.integrated.env.osx": { "PYTHONPATH": "{the path of pg_ctl folder}" },
When terminal settings are used, PYTHONPATH can affect any tools that are run within the terminal.
You can refer to the official docs for more details.
QUESTION
I'm working on rewriting the test suite for a large application using pytest and looking to have isolation between each test function. What I've noticed is, multiple calls to commit inside a SAVEPOINT are causing records to be entered into the DB. I've distilled out as much code as possible for the following example:
init.py
...ANSWER
Answered 2022-Feb-23 at 17:04With the help of SQLAlchemy's Gitter community I was able to solve this. There were two issues that needed solving:
- The
after_transaction_endevent was being registered for each individual test but not removed after the test ended. Because of this multiple events were being invoked between each test. - The
_dbbeing yielded from thedbfixture was inside the app context, which it shouldn't have been.
Updated conftest.py:
QUESTION
I'm using Flask-SQLAlchemy and I have the following simplified model which I use to track the tasks that I've completed throughout the day. What I'm trying to achieve is to calculate total time spent for each recorded task grouped by task id and client id.
...ANSWER
Answered 2022-Feb-22 at 14:34You are trying to group from a column that you aren't querying.
Try including this fields on the query
QUESTION
My app.py file
...ANSWER
Answered 2022-Feb-19 at 23:10I found a way to accomplish it. This is what needed
QUESTION
If I'm running pylint from the command line, I'd load the pylint_flask_sqlalchemy plugin by running:
ANSWER
Answered 2022-Feb-17 at 02:12You can specify options in flycheck-pylintrc("pylintrc" ".pylintrc" "pyproject.toml" "setup.cfg") in the workspace folder, which is located by the functions from flycheck-locate-config-file-functions.
Here is an example of pyproject.toml from Github.
QUESTION
I'm developing a webapp using Flask-SQLAlchemy and a Postgre DB, then I have this dropdown list in my webpage which is populated from a select to the DB, after selecting different values for a couple of times I get the "sqlalchemy.exc.TimeoutError:".
My package's versions are:
...ANSWER
Answered 2022-Jan-13 at 06:59You are leaking connections.
A little counterintuitively,
you may find you obtain better results with a lower pool limit.
A given python thread only needs a single pooled connection,
for the simple single-database queries you're doing.
Setting the limit to 1, with 0 overflow,
will cause you to notice a leaked connection earlier.
This makes it easier to pin the blame on the source code that leaked it.
As it stands, you have lots of code, and the error is deferred
until after many queries have been issued,
making it harder to reason about system behavior.
I will assume you're using sqlalchemy 1.4.29.
To avoid leaking, try using this:
QUESTION
To summarize my problem, I try to generate my PostgreSQL database tables with the SQLAlchemy command db.create_all() and it returns the following error:
...ANSWER
Answered 2021-Dec-21 at 10:01Greetings to everyone who has been interested in this thread and special thanks to mechanical_meat for his support and assistance.
I have learned a lot about python applications and the reasons why my application was failing. First of all I think that to understand the solution it is necessary that I comment my project structure:
QUESTION
I have a question you guys might be able to answer.
I have a json file that looks something like this:
...ANSWER
Answered 2021-Dec-13 at 21:35Your problem is
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install flask-sqlalchemy
You can use flask-sqlalchemy like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
